Have a 2009 Pontiac G8 GT Automatic. Built motor, Procharger (we didn't build it). Doing some weird things on dyno. Began looking at all your previous posts and read about IFR limitation of 63.5 on the E38 computers. This motor has 85# injectors which is what is loaded into the Injector Flow Rate vs Pressure table. Thought that might be part of the problem but then noticed a post about an 2009.5 ECM that doubled that limit to 127. Looked at the tune in Editor and that is the limit stated for this table. But this car was built in October 08. Began thinking we might have the later ECM so I looked up the OS # 12633016 from the tune file. This is listed for a 2009 Manual car, not an automatic. Yet it's running here and tranny has been tuned by Circle D. Much head scratching ensued.
Any thoughts?